Introduce support for Cirrus Logic Device CS40L50: a
haptics driver with waveform memory DSP and closed-loop
algorithms.
Signed-off-by: James Ogletree <james.ogletree@xxxxxxxxxx>
---
MAINTAINERS | 2 +
drivers/input/misc/Kconfig | 33 +
drivers/input/misc/Makefile | 3 +
drivers/input/misc/cs40l50-i2c.c | 67 ++
drivers/input/misc/cs40l50-spi.c | 67 ++
drivers/input/misc/cs40l50.c | 1008 ++++++++++++++++++++++++++++++
include/linux/input/cs40l50.h | 321 ++++++++++
7 files changed, 1501 insertions(+)
create mode 100644 drivers/input/misc/cs40l50-i2c.c
create mode 100644 drivers/input/misc/cs40l50-spi.c
create mode 100644 drivers/input/misc/cs40l50.c
create mode 100644 include/linux/input/cs40l50.h
diff --git a/MAINTAINERS b/MAINTAINERS
index 2869dd2dbbcf..e82d03293383 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2088,6 +2088,8 @@ M: Ben Bright <ben.bright@xxxxxxxxxx>
L: patches@xxxxxxxxxxxxxxxxxxxxx
S: Supported
F: Documentation/devicetree/bindings/input/cirrus,cs40l50.yaml
+F: drivers/input/misc/cs40l*
+F: include/linux/input/cs40l*
ARM/CLKDEV SUPPORT
M: Russell King <linux@xxxxxxxxxxxxxxx>
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index c47eecc6f83b..c1c1572ec39c 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -140,6 +140,39 @@ config INPUT_BMA150
To compile this driver as a module, choose M here: the
module will be called bma150.
+config INPUT_CS40L50
+ tristate "Cirrus Logic CS40L50 Haptic Driver support"
+ select CS_DSP
+ select REGMAP_IRQ
+ help
+ Say Y here to enable support for CS40L50 boosted haptic
+ driver.
+
+ To compile the driver as a module choose M here: the module
+ will be called cs40l50.
+
+config INPUT_CS40L50_I2C
+ tristate "Support I2C bus connection"
+ depends on INPUT_CS40L50 && I2C
+ select REGMAP_I2C
+ help
+ Say Y here if you have Cirrus Logic's CS40L50 connected
+ to an I2C bus.
+
+ To compile the driver as a module choose M here: the
+ module will be called cs40l50_i2c.
+
+config INPUT_CS40L50_SPI
+ tristate "Support SPI bus connection"
+ depends on INPUT_CS40L50 && SPI
+ select REGMAP_SPI
+ help
+ Say Y here if you have Cirrus Logic's CS40L50 connected
+ to a SPI bus.
+
+ To compile the driver as a module choose M here: the
+ module will be called cs40l50_spi.
+
config INPUT_E3X0_BUTTON
tristate "NI Ettus Research USRP E3xx Button support."
default n
diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
index 04296a4abe8e..77f34a33c364 100644
--- a/drivers/input/misc/Makefile
+++ b/drivers/input/misc/Makefile
@@ -28,6 +28,9 @@ obj-$(CONFIG_INPUT_CMA3000) += cma3000_d0x.o
obj-$(CONFIG_INPUT_CMA3000_I2C) += cma3000_d0x_i2c.o
obj-$(CONFIG_INPUT_COBALT_BTNS) += cobalt_btns.o
obj-$(CONFIG_INPUT_CPCAP_PWRBUTTON) += cpcap-pwrbutton.o
+obj-$(CONFIG_INPUT_CS40L50) += cs40l50.o
+obj-$(CONFIG_INPUT_CS40L50_I2C) += cs40l50-i2c.o
+obj-$(CONFIG_INPUT_CS40L50_SPI) += cs40l50-spi.o
obj-$(CONFIG_INPUT_DA7280_HAPTICS) += da7280.o
obj-$(CONFIG_INPUT_DA9052_ONKEY) += da9052_onkey.o
obj-$(CONFIG_INPUT_DA9055_ONKEY) += da9055_onkey.o
diff --git a/drivers/input/misc/cs40l50-i2c.c b/drivers/input/misc/cs40l50-i2c.c
new file mode 100644
index 000000000000..6ebe1b51990b
--- /dev/null
+++ b/drivers/input/misc/cs40l50-i2c.c
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * CS40L50 Advanced Haptic Driver with Waveform Memory DSP
+ * and Closed-Loop Algorithms
+ *
+ * Copyright 2023 Cirrus Logic, Inc.
+ *
+ */
+#include <linux/i2c.h>
+#include <linux/input/cs40l50.h>
+
+static const struct i2c_device_id cs40l50_id_i2c[] = {
+ {"cs40l50", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, cs40l50_id_i2c);
+
+static const struct of_device_id cs40l50_of_match[] = {
+ { .compatible = "cirrus,cs40l50" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, cs40l50_of_match);
+
+static int cs40l50_i2c_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct cs40l50_private *cs40l50;
+
+ cs40l50 = devm_kzalloc(dev, sizeof(*cs40l50), GFP_KERNEL);
+ if (!cs40l50)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, cs40l50);
+
+ cs40l50->regmap = devm_regmap_init_i2c(client, &cs40l50_regmap);
+ if (IS_ERR(cs40l50->regmap))
+ return dev_err_probe(cs40l50->dev, PTR_ERR(cs40l50->regmap),
+ "Failed to initialize register map\n");
+
+ cs40l50->dev = dev;
+ cs40l50->irq = client->irq;
+
+ return cs40l50_probe(cs40l50);
+}
+
+static void cs40l50_i2c_remove(struct i2c_client *client)
+{
+ struct cs40l50_private *cs40l50 = i2c_get_clientdata(client);
+
+ cs40l50_remove(cs40l50);
+}
+
+static struct i2c_driver cs40l50_i2c_driver = {
+ .driver = {
+ .name = "cs40l50",
+ .of_match_table = cs40l50_of_match,
+ },
+ .id_table = cs40l50_id_i2c,
+ .probe_new = cs40l50_i2c_probe,
+ .remove = cs40l50_i2c_remove,
+};
+
+module_i2c_driver(cs40l50_i2c_driver);
+
+MODULE_DESCRIPTION("CS40L50 I2C Driver");
+MODULE_AUTHOR("James Ogletree, Cirrus Logic Inc. <james.ogletree@xxxxxxxxxx>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/cs40l50-spi.c b/drivers/input/misc/cs40l50-spi.c
new file mode 100644
index 000000000000..5fcf3ba137f0
--- /dev/null
+++ b/drivers/input/misc/cs40l50-spi.c
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * CS40L50 Advanced Haptic Driver with Waveform Memory DSP
+ * and Closed-Loop Algorithms
+ *
+ * Copyright 2023 Cirrus Logic, Inc.
+ *
+ */
+#include <linux/spi/spi.h>
+#include <linux/input/cs40l50.h>
+
+static const struct spi_device_id cs40l50_id_spi[] = {
+ {"cs40l50", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(spi, cs40l50_id_spi);
+
+static const struct of_device_id cs40l50_of_match[] = {
+ { .compatible = "cirrus,cs40l50" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, cs40l50_of_match);
+
+static int cs40l50_spi_probe(struct spi_device *spi)
+{
+ struct cs40l50_private *cs40l50;
+ struct device *dev = &spi->dev;
+
+ cs40l50 = devm_kzalloc(dev, sizeof(*cs40l50), GFP_KERNEL);
+ if (!cs40l50)
+ return -ENOMEM;
+
+ spi_set_drvdata(spi, cs40l50);
+
+ cs40l50->regmap = devm_regmap_init_spi(spi, &cs40l50_regmap);
+ if (IS_ERR(cs40l50->regmap))
+ return dev_err_probe(cs40l50->dev, PTR_ERR(cs40l50->regmap),
+ "Failed to initialize register map\n");
+
+ cs40l50->dev = dev;
+ cs40l50->irq = spi->irq;
+
+ return cs40l50_probe(cs40l50);
+}
+
+static void cs40l50_spi_remove(struct spi_device *spi)
+{
+ struct cs40l50_private *cs40l50 = spi_get_drvdata(spi);
+
+ cs40l50_remove(cs40l50);
+}
+
+static struct spi_driver cs40l50_spi_driver = {
+ .driver = {
+ .name = "cs40l50",
+ .of_match_table = cs40l50_of_match,
+ },
+ .id_table = cs40l50_id_spi,
+ .probe = cs40l50_spi_probe,
+ .remove = cs40l50_spi_remove,
+};
+
+module_spi_driver(cs40l50_spi_driver);
+
+MODULE_DESCRIPTION("CS40L50 SPI Driver");
+MODULE_AUTHOR("James Ogletree, Cirrus Logic Inc. <james.ogletree@xxxxxxxxxx>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/cs40l50.c b/drivers/input/misc/cs40l50.c
new file mode 100644
index 000000000000..9bb2881683c0
--- /dev/null
+++ b/drivers/input/misc/cs40l50.c
@@ -0,0 +1,1008 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * CS40L50 Advanced Haptic Driver with Waveform Memory DSP
+ * and Closed-Loop Algorithms
+ *
+ * Copyright 2023 Cirrus Logic, Inc.
+ *
+ */
+#include <linux/firmware.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/bitfield.h>
+#include <linux/input/cs40l50.h>
+
+const struct regmap_config cs40l50_regmap = {
+ .reg_bits = 32,
+ .val_bits = 32,
+ .reg_stride = 4,
+ .reg_format_endian = REGMAP_ENDIAN_BIG,
+ .val_format_endian = REGMAP_ENDIAN_BIG,
+};
+EXPORT_SYMBOL_GPL(cs40l50_regmap);
+
+static struct regulator_bulk_data cs40l50_supplies[] = {
+ { .supply = "vp" },
+ { .supply = "vio" },
+ { .supply = "va" },
+};
+
+static int cs40l50_dsp_write(struct cs40l50_private *cs40l50, u32 write_reg, u32 write_val)
+{
+ int error = 0, i;
+
+ for (i = 0; i < CS40L50_DSP_TIMEOUT_COUNT; i++) {
+ error = regmap_write(cs40l50->regmap, write_reg, write_val);
+ if (!error)
+ break;
+
+ usleep_range(CS40L50_DSP_POLL_US, CS40L50_DSP_POLL_US + 100);
+ }
+
+ if (i == CS40L50_DSP_TIMEOUT_COUNT) {
+ dev_err(cs40l50->dev, "Error writing %#X to %#X: %d", write_val, write_reg, error);
+ return error;
+ }
+
+ return 0;
+}
+
+static int cs40l50_dsp_read(struct cs40l50_private *cs40l50, u32 read_reg, u32 *read_val)
+{
+ int error = 0, i;
+
+ for (i = 0; i < CS40L50_DSP_TIMEOUT_COUNT; i++) {
+ error = regmap_read(cs40l50->regmap, read_reg, read_val);
+ if (!error)
+ break;
+
+ usleep_range(CS40L50_DSP_POLL_US, CS40L50_DSP_POLL_US + 100);
+ }
+
+ if (i == CS40L50_DSP_TIMEOUT_COUNT) {
+ dev_err(cs40l50->dev, "Error reading %#X: %d", read_reg, error);
+ return error;
+ }
+
+ return 0;
+}
+
+static int cs40l50_pseq_write(struct cs40l50_private *cs40l50, u32 addr, u32 data)
+{
+ u8 operation = 0;
+ struct cs40l50_pseq_op *op_new, *op_end;
+ int error;
+
+ op_new = devm_kzalloc(cs40l50->dev, sizeof(*op_new), GFP_KERNEL);
+ if (!op_new)
+ return -ENOMEM;
+
+ op_new->words[0] = (addr >> CS40L50_PSEQ_WRITE_FULL_UPPER_ADDR_SHIFT);
+ op_new->words[1] = ((addr & CS40L50_PSEQ_WRITE_FULL_LOWER_ADDR_MASK) <<
+ CS40L50_PSEQ_WRITE_FULL_LOWER_ADDR_SHIFT) |
+ (data >> CS40L50_PSEQ_WRITE_FULL_UPPER_DATA_SHIFT);
+ op_new->words[2] = data & CS40L50_PSEQ_WRITE_FULL_LOWER_DATA_MASK;
+
+ list_for_each_entry(op_end, &cs40l50->pseq_op_head, list) {
+ operation = op_end->operation;
+ if (operation == CS40L50_PSEQ_OP_END)
+ break;
+ }
+
+ if (operation != CS40L50_PSEQ_OP_END) {
+ error = -ENOENT;
+ goto op_new_free;
+ }
+
+ if ((CS40L50_PSEQ_MAX_WORDS - op_end->offset) < ARRAY_SIZE(op_new->words)) {
+ error = -ENOSPC;
+ goto op_new_free;
+ }
+
+ op_new->offset = op_end->offset;
+ op_end->offset += (ARRAY_SIZE(op_new->words) * sizeof(u32));
+
+ error = regmap_bulk_write(cs40l50->regmap, CS40L50_DSP1_POWER_ON_SEQ + op_new->offset,
+ op_new->words, ARRAY_SIZE(op_new->words));
+ if (error)
+ goto op_new_free;
+
+ error = cs40l50_dsp_write(cs40l50, CS40L50_DSP1_POWER_ON_SEQ + op_end->offset,
+ op_end->words[0]);
+ if (error)
+ goto op_new_free;
+
+ list_add(&op_new->list, &cs40l50->pseq_op_head);
+
+ return 0;
+
+op_new_free:
+ devm_kfree(cs40l50->dev, op_new);
+
+ return error;
+}
+
+static struct cs40l50_effect *cs40l50_find_effect(struct cs40l50_private *cs40l50, int id)
+{
+ struct cs40l50_effect *effect;
+
+ if (!list_empty(&cs40l50->effect_head)) {
+ list_for_each_entry(effect, &cs40l50->effect_head, list) {
+ if (effect->id == id)
+ return effect;
+ }
+ }
+
+ return NULL;
+}
+
+static int cs40l50_owt_upload(struct cs40l50_private *cs40l50, s16 *in_data, u32 in_data_nibbles)
+{
+ size_t in_data_bytes = 2 * in_data_nibbles;
+ struct cs40l50_owt_header header;
+ u32 wt_offset, wt_size_words;
+ int error;
+ u8 *data;
+
+ error = cs40l50_dsp_read(cs40l50, CS40L50_DSP1_OWT_NEXT, &wt_offset);
+ if (error)
+ return error;
+
+ error = cs40l50_dsp_read(cs40l50, CS40L50_DSP1_OWT_SIZE, &wt_size_words);
+ if (error)
+ return error;
+
+ if ((wt_size_words * sizeof(u32)) < CS40L50_WT_HEADER_PWLE_SIZE + in_data_bytes)
+ return -ENOSPC;
+
+ data = kcalloc(CS40L50_WT_HEADER_PWLE_SIZE + in_data_bytes, sizeof(u8), GFP_KERNEL);
+ if (IS_ERR_OR_NULL(data))
+ return -ENOMEM;
+
+ header.wvfrm_type = in_data[0] == CS40L50_PCM_ID ? CS40L50_WT_TYPE_PCM :
+ CS40L50_WT_TYPE_PWLE;
+ header.offset = CS40L50_WT_HEADER_OFFSET;
+ header.data_size = in_data_bytes / sizeof(u32);
+
+ memcpy(data, &header, sizeof(header));
+ memcpy(data + (CS40L50_WT_HEADER_OFFSET * sizeof(u32)), in_data, in_data_bytes);
+
+ error = regmap_bulk_write(cs40l50->regmap, CS40L50_DSP1_OWT_BASE +
+ (wt_offset * sizeof(u32)), data,
+ CS40L50_WT_HEADER_PWLE_SIZE + in_data_bytes);
+ if (error)
+ goto err_free;
+
+ error = cs40l50_dsp_write(cs40l50, CS40L50_DSP_VIRTUAL1_MBOX_1, CS40L50_MBOX_CMD_OWT_PUSH);
+err_free:
+ kfree(data);
+
+ return error;
+}
+
+static int cs40l50_add_effect(struct input_dev *dev, struct ff_effect *effect,
+ struct ff_effect *old)
+{
+ struct cs40l50_private *cs40l50 = input_get_drvdata(dev);
+ bool is_new = false;
+ struct cs40l50_effect *new_effect;
+ u32 nwaves, base_index, max_index;
+ s16 *raw_custom_data;
+ int error;
+
+ if (effect->type != FF_PERIODIC || effect->u.periodic.waveform != FF_CUSTOM) {
+ dev_err(cs40l50->dev, "Type (%#X) or waveform (%#X) unsupported\n",
+ effect->type, effect->u.periodic.waveform);
+ return -EINVAL;
+ }
+
+ raw_custom_data = kcalloc(effect->u.periodic.custom_len, sizeof(s16), GFP_KERNEL);
+ if (IS_ERR_OR_NULL(raw_custom_data))
+ return -ENOMEM;
+
+ error = copy_from_user(raw_custom_data, effect->u.periodic.custom_data,
+ sizeof(s16) * effect->u.periodic.custom_len);
+ if (error)
+ goto out_free;
+
+ mutex_lock(&cs40l50->lock);
+
+ new_effect = cs40l50_find_effect(cs40l50, effect->id);
+ if (!new_effect) {
+ is_new = true;
+ new_effect = kzalloc(sizeof(*new_effect), GFP_KERNEL);
+ if (IS_ERR_OR_NULL(new_effect)) {
+ error = -ENOMEM;
+ goto err_mutex;
+ }
+ }
+
+ if (effect->u.periodic.custom_len > CS40L50_CUSTOM_DATA_SIZE) {
+ error = cs40l50_dsp_read(cs40l50, CS40L50_NUM_OF_OWT_WAVES,
+ &new_effect->trigger_index);
+ if (error)
+ goto err_free;
+
+ new_effect->wvfrm_bank = CS40L50_WVFRM_BANK_OWT;
+ base_index = CS40L50_OWT_INDEX_START;
+ max_index = CS40L50_OWT_INDEX_END;
+ } else {
+ new_effect->trigger_index = (raw_custom_data[1] & 0xffffu);
+ new_effect->wvfrm_bank = (raw_custom_data[0] & 0xffffu);
+
+ if (new_effect->wvfrm_bank == CS40L50_WVFRM_BANK_ROM) {
+ base_index = CS40L50_ROM_BANK_INDEX_START;
+ max_index = CS40L50_ROM_BANK_INDEX_END;
+ } else if (new_effect->wvfrm_bank == CS40L50_WVFRM_BANK_RAM) {
+ error = cs40l50_dsp_read(cs40l50, CS40L50_NUM_OF_WAVES, &nwaves);
+ if (error)
+ goto err_free;
+
+ base_index = CS40L50_RAM_BANK_INDEX_START;
+ max_index = base_index + nwaves - 1;
+ } else {
+ dev_err(cs40l50->dev, "Invalid waveform bank\n");
+ error = -EINVAL;
+ goto err_free;
+ }
+ }
+
+ new_effect->trigger_index += base_index;
+
+ if (new_effect->trigger_index > max_index) {
+ dev_err(cs40l50->dev, "Index %#X out of bounds\n", new_effect->trigger_index);
+ error = -EINVAL;
+ goto err_free;
+ }
+
+ if (effect->trigger.button) {
+ new_effect->mapping = CS40L50_DSP1_GPIO_BASE + sizeof(u32) *
+ FIELD_GET(CS40L50_BTN_NUM_MASK, effect->trigger.button) * 2 -
+ FIELD_GET(CS40L50_BTN_EDGE_MASK, effect->trigger.button);
+
+ error = cs40l50_dsp_write(cs40l50, new_effect->mapping, effect->trigger.button);
+ if (error)
+ goto err_free;
+ }
+
+ if (new_effect->wvfrm_bank == CS40L50_WVFRM_BANK_OWT) {
+ error = cs40l50_owt_upload(cs40l50, raw_custom_data,
+ effect->u.periodic.custom_len);
+ if (error)
+ goto err_free;
+ }
+
+err_free:
+ if (is_new)
+ error ? kfree(new_effect) : list_add(&new_effect->list, &cs40l50->effect_head);
+err_mutex:
+ mutex_unlock(&cs40l50->lock);
+out_free:
+ kfree(raw_custom_data);
+
+ return error ? -EFAULT : 0;
+}
+
+
+static void cs40l50_vibe_start_worker(struct work_struct *work)
+{
+ struct cs40l50_private *cs40l50 =
+ container_of(work, struct cs40l50_private, vibe_start_work);
+ struct cs40l50_effect *effect;
+
+ mutex_lock(&cs40l50->lock);
+
+ effect = cs40l50_find_effect(cs40l50, cs40l50->trigger_effect->id);
+ if (effect)
+ cs40l50_dsp_write(cs40l50, CS40L50_DSP_VIRTUAL1_MBOX_1, effect->trigger_index);
+
+ mutex_unlock(&cs40l50->lock);
+}
+
+static void cs40l50_vibe_stop_worker(struct work_struct *work)
+{
+ struct cs40l50_private *cs40l50 =
+ container_of(work, struct cs40l50_private, vibe_stop_work);
+
+ mutex_lock(&cs40l50->lock);
+
+ cs40l50_dsp_write(cs40l50, CS40L50_DSP_VIRTUAL1_MBOX_1, CS40L50_MBOX_CMD_STOP_PLAYBACK);
+
+ mutex_unlock(&cs40l50->lock);
+}
+
+static int cs40l50_playback_effect(struct input_dev *dev, int effect_id, int val)
+{
+ struct cs40l50_private *cs40l50 = input_get_drvdata(dev);
+
+ cs40l50->trigger_effect = &dev->ff->effects[effect_id];
+
+ if (val > 0)
+ queue_work(cs40l50->vibe_workqueue, &cs40l50->vibe_start_work);
+ else
+ queue_work(cs40l50->vibe_workqueue, &cs40l50->vibe_stop_work);
+
+ return 0;
+}
+
+static int cs40l50_erase_effect(struct input_dev *dev, int effect_id)
+{
+ int error = 0;
+ struct cs40l50_private *cs40l50 = input_get_drvdata(dev);
+ struct cs40l50_effect *effect, *effect_owt;
+
+ mutex_lock(&cs40l50->lock);
+
+ effect = cs40l50_find_effect(cs40l50, dev->ff->effects[effect_id].id);
+ if (!effect) {
+ error = -EINVAL;
+ goto err_mutex;
+ }
+
+ if (effect->mapping != CS40L50_GPIO_MAPPING_INVALID) {
+ error = cs40l50_dsp_write(cs40l50, effect->mapping, CS40L50_GPI_DISABLE);
+ if (error)
+ goto err_mutex;
+ }
+
+ if (effect->wvfrm_bank == CS40L50_WVFRM_BANK_OWT) {
+ error = cs40l50_dsp_write(cs40l50, CS40L50_DSP_VIRTUAL1_MBOX_1,
+ CS40L50_MBOX_CMD_OWT_DELETE | effect->trigger_index);
+ if (error)
+ goto err_mutex;
+
+ list_for_each_entry(effect_owt, &cs40l50->effect_head, list) {
+ if (effect_owt->wvfrm_bank == CS40L50_WVFRM_BANK_OWT &&
+ effect_owt->trigger_index > effect->trigger_index)
+ effect_owt->trigger_index--;
+ }
+ }
+
+ list_del(&effect->list);
+ kfree(effect);
+err_mutex:
+ mutex_unlock(&cs40l50->lock);
+
+ return error;
+}
+
+static int cs40l50_mailbox_read_next(struct cs40l50_private *cs40l50, u32 *val)
+{
+ u32 wt_ptr, rd_ptr;
+ int error = 0;
+
+ error = cs40l50_dsp_read(cs40l50, CS40L50_DSP1_MBOX_QUEUE_WT, &wt_ptr);
+ if (error)
+ return error;
+
+ error = cs40l50_dsp_read(cs40l50, CS40L50_DSP1_MBOX_QUEUE_RD, &rd_ptr);
+ if (error)
+ return error;
+
+ if (wt_ptr == rd_ptr) {
+ *val = 0;
+ return 0;
+ }
+
+ error = cs40l50_dsp_read(cs40l50, rd_ptr, val);
+ if (error)
+ return error;
+
+ rd_ptr += sizeof(u32);
+ if (rd_ptr > CS40L50_MBOX_QUEUE_END)
+ rd_ptr = CS40L50_MBOX_QUEUE_BASE;
+
+ return cs40l50_dsp_write(cs40l50, CS40L50_DSP1_MBOX_QUEUE_RD, rd_ptr);
+}
+
+static int cs40l50_handle_f0_est_done(struct cs40l50_private *cs40l50)
+{
+ int error;
+ u32 f_zero;
+
+ error = cs40l50_dsp_read(cs40l50, CS40L50_DSP1_F0_ESTIMATION, &f_zero);
+ if (error)
+ return error;
+
+ return cs40l50_dsp_write(cs40l50, CS40L50_DSP1_F0_STORED, f_zero);
+}
+
+static int cs40l50_handle_redc_est_done(struct cs40l50_private *cs40l50)
+{
+ int integer, fractional, error;
+ u32 redc;
+
+ error = cs40l50_dsp_read(cs40l50, CS40L50_DSP1_RE_EST_STATUS, &redc);
+ if (error)
+ return error;
+
+ error = cs40l50_dsp_write(cs40l50, CS40L50_DSP1_REDC_ESTIMATION, redc);
+ if (error)
+ return error;
+
+ /* Convert from Q8.15 to (Q7.17 * 29/240) */
+ integer = (redc >> 15) & 0xFF;
+ fractional = (redc & 0x7FFF) * 4;
+
+ return cs40l50_dsp_write(cs40l50, CS40L50_DSP1_REDC_STORED,
+ (((integer << 17) | fractional) * 29 / 240) & GENMASK(23, 0));
+}
+
+static int cs40l50_error_release(struct cs40l50_private *cs40l50)
+{
+ int error;
+
+ error = cs40l50_dsp_write(cs40l50, CS40L50_ERROR_RELEASE, CS40L50_ERROR_RELEASE_MASK);
+ if (error)
+ return error;
+
+ return cs40l50_dsp_write(cs40l50, CS40L50_ERROR_RELEASE, 0);
+}
+
+static irqreturn_t cs40l50_handle_mbox_buffer(int irq, void *data)
+{
+ struct cs40l50_private *cs40l50 = data;
+ int error = 0;
+ u32 val;
+
+ mutex_lock(&cs40l50->lock);
+
+ while (!cs40l50_mailbox_read_next(cs40l50, &val)) {
+ switch (val) {
+ case 0:
+ goto out_irq;
+ case CS40L50_DSP_MBOX_HAPTIC_TRIGGER_GPIO:
+ dev_dbg(cs40l50->dev, "Mailbox: TRIGGER_GPIO\n");
+ break;
+ case CS40L50_DSP_MBOX_HAPTIC_TRIGGER_MBOX:
+ dev_dbg(cs40l50->dev, "Mailbox: TRIGGER_MBOX\n");
+ break;
+ case CS40L50_DSP_MBOX_HAPTIC_TRIGGER_I2S:
+ dev_dbg(cs40l50->dev, "Mailbox: TRIGGER_I2S\n");
+ break;
+ case CS40L50_DSP_MBOX_HAPTIC_COMPLETE_MBOX:
+ dev_dbg(cs40l50->dev, "Mailbox: COMPLETE_MBOX\n");
+ break;
+ case CS40L50_DSP_MBOX_HAPTIC_COMPLETE_GPIO:
+ dev_dbg(cs40l50->dev, "Mailbox: COMPLETE_GPIO\n");
+ break;
+ case CS40L50_DSP_MBOX_HAPTIC_COMPLETE_I2S:
+ dev_dbg(cs40l50->dev, "Mailbox: COMPLETE_I2S\n");
+ break;
+ case CS40L50_DSP_MBOX_F0_EST_START:
+ dev_dbg(cs40l50->dev, "Mailbox: F0_EST_START\n");
+ break;
+ case CS40L50_DSP_MBOX_F0_EST_DONE:
+ dev_dbg(cs40l50->dev, "Mailbox: F0_EST_DONE\n");
+ error = cs40l50_handle_f0_est_done(cs40l50);
+ if (error)
+ goto out_irq;
+ break;
+ case CS40L50_DSP_MBOX_REDC_EST_START:
+ dev_dbg(cs40l50->dev, "Mailbox: REDC_EST_START\n");
+ break;
+ case CS40L50_DSP_MBOX_REDC_EST_DONE:
+ dev_dbg(cs40l50->dev, "Mailbox: REDC_EST_DONE\n");
+ error = cs40l50_handle_redc_est_done(cs40l50);
+ if (error)
+ goto out_irq;
+ break;
+ case CS40L50_DSP_MBOX_LE_EST_START:
+ dev_dbg(cs40l50->dev, "Mailbox: LE_EST_START\n");
+ break;
+ case CS40L50_DSP_MBOX_LE_EST_DONE:
+ dev_dbg(cs40l50->dev, "Mailbox: LE_EST_DONE\n");
+ break;
+ case CS40L50_DSP_MBOX_AWAKE:
+ dev_dbg(cs40l50->dev, "Mailbox: AWAKE\n");
+ break;
+ case CS40L50_DSP_MBOX_INIT:
+ dev_dbg(cs40l50->dev, "Mailbox: INIT\n");
+ break;
+ case CS40L50_DSP_MBOX_ACK:
+ dev_dbg(cs40l50->dev, "Mailbox: ACK\n");
+ break;
+ case CS40L50_DSP_MBOX_ERR_EVENT_UNMAPPED:
+ dev_err(cs40l50->dev, "Unmapped event\n");
+ break;
+ case CS40L50_DSP_MBOX_ERR_EVENT_MODIFY:
+ dev_err(cs40l50->dev, "Attempt to modify event index failed\n");
+ break;
+ case CS40L50_DSP_MBOX_ERR_NULLPTR:
+ dev_err(cs40l50->dev, "Null pointer\n");
+ break;
+ case CS40L50_DSP_MBOX_ERR_BRAKING:
+ dev_err(cs40l50->dev, "Braking not in progress\n");
+ break;
+ case CS40L50_DSP_MBOX_ERR_INVAL_SRC:
+ dev_err(cs40l50->dev, "Suspend/resume invalid source\n");
+ break;
+ case CS40L50_DSP_MBOX_ERR_ENABLE_RANGE:
+ dev_err(cs40l50->dev, "GPIO enable out of range\n");
+ break;
+ case CS40L50_DSP_MBOX_ERR_GPIO_UNMAPPED:
+ dev_err(cs40l50->dev, "GPIO not mapped\n");
+ break;
+ case CS40L50_DSP_MBOX_ERR_ISR_RANGE:
+ dev_err(cs40l50->dev, "GPIO ISR out of range\n");
+ break;
+ case CS40L50_DSP_MBOX_PERMANENT_SHORT:
+ dev_crit(cs40l50->dev, "Permanent short detected\n");
+ break;
+ case CS40L50_DSP_MBOX_RUNTIME_SHORT:
+ dev_err(cs40l50->dev, "Runtime short detected\n");
+ error = cs40l50_error_release(cs40l50);
+ if (error)
+ goto out_irq;
+ break;
+ default:
+ dev_err(cs40l50->dev, "Mailbox value %#X not recognized\n", val);
+ error = -EINVAL;
+ goto out_irq;
+ }
+ }
+
+ error = -EIO;
+
+out_irq:
+ mutex_unlock(&cs40l50->lock);
+
+ return IRQ_RETVAL(!error);
+}
+
+
+static irqreturn_t cs40l50_vddb_uv(int irq, void *data)
+{
+ struct cs40l50_private *cs40l50 = data;
+
+ dev_err(cs40l50->dev, "VDD_B undervoltage error\n");
+
+ return IRQ_RETVAL(!cs40l50_error_release(cs40l50));
+}
+
+static irqreturn_t cs40l50_boost_current_limit(int irq, void *data)
+{
+ struct cs40l50_private *cs40l50 = data;
+
+ dev_err(cs40l50->dev, "Boost current limit engagement\n");
+
+ return IRQ_RETVAL(!cs40l50_error_release(cs40l50));
+}
+
+static irqreturn_t cs40l50_boost_short(int irq, void *data)
+{
+ struct cs40l50_private *cs40l50 = data;
+
+ dev_err(cs40l50->dev, "Boost inductor short error\n");
+
+ return IRQ_RETVAL(!cs40l50_error_release(cs40l50));
+}
+
+static irqreturn_t cs40l50_boost_uv(int irq, void *data)
+{
+ struct cs40l50_private *cs40l50 = data;
+
+ dev_err(cs40l50->dev, "Boost undervoltage error\n");
+
+ return IRQ_RETVAL(!cs40l50_error_release(cs40l50));
+}
+
+static irqreturn_t cs40l50_overtemperature(int irq, void *data)
+{
+ struct cs40l50_private *cs40l50 = data;
+
+ dev_err(cs40l50->dev, "Overtemperature error\n");
+
+ return IRQ_RETVAL(!cs40l50_error_release(cs40l50));
+}
+
+static irqreturn_t cs40l50_amp_short(int irq, void *data)
+{
+ struct cs40l50_private *cs40l50 = data;
+
+ dev_err(cs40l50->dev, "Amp short error\n");
+
+ return IRQ_RETVAL(!cs40l50_error_release(cs40l50));
+}
+
+static irqreturn_t cs40l50_global_error(int irq, void *data)
+{
+ struct cs40l50_private *cs40l50 = data;
+
+ dev_err(cs40l50->dev, "MSM chip error\n");
+
+ return IRQ_RETVAL(!cs40l50_error_release(cs40l50));
+}
+
+static const struct cs40l50_irq cs40l50_irqs[] = {
+ CS40L50_IRQ(CS40L50_AMP_SHORT_IRQ, "Amp short", cs40l50_amp_short),
+ CS40L50_IRQ(CS40L50_VIRT2_MBOX_IRQ, "Firmware interrupt", cs40l50_handle_mbox_buffer),
+ CS40L50_IRQ(CS40L50_TEMP_ERR_IRQ, "Overtemperature", cs40l50_overtemperature),
+ CS40L50_IRQ(CS40L50_BST_UVP_IRQ, "Boost undervoltage", cs40l50_boost_uv),
+ CS40L50_IRQ(CS40L50_BST_SHORT_IRQ, "Boost short", cs40l50_boost_short),
+ CS40L50_IRQ(CS40L50_BST_ILIMIT_IRQ, "Boost current limit", cs40l50_boost_current_limit),
+ CS40L50_IRQ(CS40L50_UVLO_VDDBATT_IRQ, "VDD_B undervoltage", cs40l50_vddb_uv),
+ CS40L50_IRQ(CS40L50_GLOBAL_ERROR_IRQ, "Global error", cs40l50_global_error),
+};
+
+static const struct regmap_irq cs40l50_reg_irqs[] = {
+ CS40L50_REG_IRQ(IRQ1_INT_1, AMP_SHORT),
+ CS40L50_REG_IRQ(IRQ1_INT_2, VIRT2_MBOX),
+ CS40L50_REG_IRQ(IRQ1_INT_8, TEMP_ERR),
+ CS40L50_REG_IRQ(IRQ1_INT_9, BST_UVP),
+ CS40L50_REG_IRQ(IRQ1_INT_9, BST_SHORT),
+ CS40L50_REG_IRQ(IRQ1_INT_9, BST_ILIMIT),
+ CS40L50_REG_IRQ(IRQ1_INT_10, UVLO_VDDBATT),
+ CS40L50_REG_IRQ(IRQ1_INT_18, GLOBAL_ERROR),
+};
+
+static const struct regmap_irq_chip cs40l50_regmap_irq_chip = {
+ .name = "cs40l50 IRQ1 Controller",
+ .status_base = CS40L50_IRQ1_INT_1,
+ .mask_base = CS40L50_IRQ1_MASK_1,
+ .ack_base = CS40L50_IRQ1_INT_1,
+ .num_regs = 19,
+ .irqs = cs40l50_reg_irqs,
+ .num_irqs = ARRAY_SIZE(cs40l50_reg_irqs),
+ .runtime_pm = true,
+};
+
+static const struct reg_sequence cs40l50_ext_bst_seq[] = {
+ { CS40L50_BLOCK_ENABLES, CS40L50_MON_ENABLE },
+ { CS40L50_MON_VALUE_CTRL, CS40L50_VBST_VDD_AMP },
+ { CS40L50_TEST_KEY, CS40L50_KEY_SET_1 },
+ { CS40L50_TEST_KEY, CS40L50_KEY_SET_2 },
+ { CS40L50_TEST_VIS_SPARE, CS40L50_TEMP_SENSOR_3 },
+ { CS40L50_MON_ERROR_OVERIDE, CS40L50_TEMP_ERR_THLD },
+ { CS40L50_STATUS, CS40L50_TEMP_WARN_THLD },
+ { CS40L50_TEST_CONFIG, CS40L50_TEMP_FILT_DEBOUNCE_OFF },
+ { CS40L50_TEMP_WARN_CONFIG, CS40L50_TEMP_WARN_ATK_VOL },
+};
+
+static int cs40l50_config_bst(struct cs40l50_private *cs40l50)
+{
+ int error, i;
+
+ if (device_property_present(cs40l50->dev, "cirrus,external-boost")) {
+ error = regmap_multi_reg_write(cs40l50->regmap, cs40l50_ext_bst_seq,
+ ARRAY_SIZE(cs40l50_ext_bst_seq));
+ if (error)
+ return error;
+
+ for (i = 0; i < ARRAY_SIZE(cs40l50_ext_bst_seq); i++) {
+ error = cs40l50_pseq_write(cs40l50, cs40l50_ext_bst_seq[i].reg,
+ cs40l50_ext_bst_seq[i].def);
+ if (error)
+ return error;
+ }
+
+ return 0;
+ }
+
+ /* Internal boost config */
+ return cs40l50_dsp_write(cs40l50, CS40L50_BST_LPMODE_SEL, CS40L50_DCM_LOW_POWER);
+}
+
+static int cs40l50_patch_firmware(struct cs40l50_private *cs40l50)
+{
+ const struct firmware *bin = NULL, *wmfw = NULL;
+ int error = 0;
+
+ if (request_firmware(&bin, "cs40l50.bin", cs40l50->dev))
+ dev_info(cs40l50->dev, "Could not request wavetable file: %d\n", error);
+
+ if (request_firmware(&wmfw, "cs40l50.wmfw", cs40l50->dev))
+ dev_info(cs40l50->dev, "Could not request firmware patch file: %d\n", error);
+
+ if (wmfw) {
+ error = cs40l50_dsp_write(cs40l50, CS40L50_CCM_CORE_CONTROL,
+ CS40L50_DSP1_CLOCK_DISABLE);
+ if (error)
+ goto err_fw;
+
+ error = cs40l50_dsp_write(cs40l50, CS40L50_RAM_INIT,
+ CS40L50_DSP1_RAM_INIT_FLAG);
+ if (error)
+ goto err_fw;
+
+ error = cs40l50_dsp_write(cs40l50, CS40L50_PWRMGT_CTL,
+ CS40L50_DSP1_MEM_RDY_HW);
+ if (error)
+ goto err_fw;
+ }
+
+ mutex_lock(&cs40l50->lock);
+
+ cs_dsp_power_up(&cs40l50->dsp, wmfw, "cs40l50.wmfw", bin, "cs40l50.bin", "cs40l50");
+
+ mutex_unlock(&cs40l50->lock);
+
+ if (wmfw)
+ error = cs40l50_dsp_write(cs40l50, CS40L50_CCM_CORE_CONTROL,
+ CS40L50_DSP1_CLOCK_ENABLE);
+
+err_fw:
+ release_firmware(wmfw);
+ release_firmware(bin);
+
+ return error;
+}
+
+static int cs40l50_pseq_init(struct cs40l50_private *cs40l50)
+{
+ struct cs40l50_pseq_op *pseq_op;
+ int error, i, num_words;
+ u8 operation;
+ u32 *words;
+
+ INIT_LIST_HEAD(&cs40l50->pseq_op_head);
+
+ words = kcalloc(CS40L50_PSEQ_MAX_WORDS, sizeof(u32), GFP_KERNEL);
+ if (IS_ERR_OR_NULL(words))
+ return -ENOMEM;
+
+ error = regmap_bulk_read(cs40l50->regmap, CS40L50_DSP1_POWER_ON_SEQ, words,
+ CS40L50_PSEQ_MAX_WORDS);
+ if (error)
+ goto err_free;
+
+ for (i = 0; i < CS40L50_PSEQ_MAX_WORDS; i++)
+ words[i] = be32_to_cpu(words[i]);
+
+ for (i = 0; i < CS40L50_PSEQ_MAX_WORDS; i += num_words) {
+ operation = (words[i] & CS40L50_PSEQ_OP_MASK) >> CS40L50_PSEQ_OP_SHIFT;
+
+ switch (operation) {
+ case CS40L50_PSEQ_OP_END:
+ num_words = CS40L50_PSEQ_OP_END_WORDS;
+ break;
+ case CS40L50_PSEQ_OP_WRITE_ADDR8:
+ case CS40L50_PSEQ_OP_WRITE_H16:
+ case CS40L50_PSEQ_OP_WRITE_L16:
+ num_words = CS40L50_PSEQ_OP_WRITE_X16_WORDS;
+ break;
+ case CS40L50_PSEQ_OP_WRITE_FULL:
+ num_words = CS40L50_PSEQ_OP_WRITE_FULL_WORDS;
+ break;
+ default:
+ dev_err(cs40l50->dev, "Invalid OP code 0x%02X\n", operation);
+ error = -EINVAL;
+ goto err_free;
+ }
+
+ pseq_op = devm_kzalloc(cs40l50->dev, sizeof(*pseq_op), GFP_KERNEL);
+ if (!pseq_op) {
+ error = -ENOMEM;
+ goto err_free;
+ }
+
+ memcpy(pseq_op->words, &words[i], num_words * sizeof(u32));
+ pseq_op->size = num_words;
+ pseq_op->offset = i * sizeof(u32);
+ pseq_op->operation = operation;
+ list_add(&pseq_op->list, &cs40l50->pseq_op_head);
+
+ if (operation == CS40L50_PSEQ_OP_END)
+ break;
+ }
+
+ if (operation != CS40L50_PSEQ_OP_END) {
+ dev_err(cs40l50->dev, "PSEQ_END_OF_SCRIPT not found\n");
+ error = -ENOENT;
+ }
+
+err_free:
+ kfree(words);
+
+ return error;
+}
+
+static int cs40l50_input_init(struct cs40l50_private *cs40l50)
+{
+ int error;
+ u32 val;
+
+ error = cs40l50_dsp_read(cs40l50, CS40L50_DEVID, &val);
+ if (error)
+ return error;
+
+ if (val != CS40L50_DEVID_A) {
+ dev_err(cs40l50->dev, "Invalid device ID: %#010X\n", val);
+ return -EINVAL;
+ }
+
+ cs40l50->input->id.product = val & 0xFFFF;
+
+ error = cs40l50_dsp_read(cs40l50, CS40L50_REVID, &val);
+ if (error)
+ return error;
+
+ if (val != CS40L50_REVID_B0) {
+ dev_err(cs40l50->dev, "Invalid device revision: %#04X\n", val);
+ return -EINVAL;
+ }
+
+ cs40l50->input->id.version = val;
+
+ cs40l50->input = devm_input_allocate_device(cs40l50->dev);
+ if (IS_ERR_OR_NULL(cs40l50->input))
+ return cs40l50->input ? PTR_ERR(cs40l50->input) : -ENOMEM;
+
+ cs40l50->input->name = "cs40l50_input";
+ input_set_drvdata(cs40l50->input, cs40l50);
+ input_set_capability(cs40l50->input, EV_FF, FF_PERIODIC);
+ input_set_capability(cs40l50->input, EV_FF, FF_CUSTOM);
+
+ error = input_ff_create(cs40l50->input, FF_MAX_EFFECTS);
+ if (error)
+ return error;
+
+ clear_bit(FF_RUMBLE, cs40l50->input->ffbit);
+
+ cs40l50->input->ff->upload = cs40l50_add_effect;
+ cs40l50->input->ff->playback = cs40l50_playback_effect;
+ cs40l50->input->ff->erase = cs40l50_erase_effect;
+
+ INIT_LIST_HEAD(&cs40l50->effect_head);
+
+ return input_register_device(cs40l50->input);
+}
+
+static const struct cs_dsp_client_ops cs40l50_cs_dsp_client_ops;
+
+static const struct cs_dsp_region cs40l50_dsp_regions[] = {
+ { .type = WMFW_HALO_PM_PACKED, .base = CS40L50_DSP1_PMEM_0 },
+ { .type = WMFW_HALO_XM_PACKED, .base = CS40L50_DSP1_XMEM_PACKED_0 },
+ { .type = WMFW_HALO_YM_PACKED, .base = CS40L50_DSP1_YMEM_PACKED_0 },
+ { .type = WMFW_ADSP2_XM, .base = CS40L50_DSP1_XMEM_UNPACKED24_0 },
+ { .type = WMFW_ADSP2_YM, .base = CS40L50_DSP1_YMEM_UNPACKED24_0 },
+};
+
+static int cs40l50_cs_dsp_init(struct cs40l50_private *cs40l50)
+{
+ cs40l50->dsp.num = 1;
+ cs40l50->dsp.type = WMFW_HALO;
+ cs40l50->dsp.dev = cs40l50->dev;
+ cs40l50->dsp.regmap = cs40l50->regmap;
+ cs40l50->dsp.base = CS40L50_DSP1_CORE_BASE;
+ cs40l50->dsp.base_sysinfo = CS40L50_DSP1_SYS_INFO_ID;
+ cs40l50->dsp.mem = cs40l50_dsp_regions;
+ cs40l50->dsp.num_mems = ARRAY_SIZE(cs40l50_dsp_regions);
+ cs40l50->dsp.lock_regions = 0xFFFFFFFF;
+ cs40l50->dsp.no_core_startstop = true;
+ cs40l50->dsp.client_ops = &cs40l50_cs_dsp_client_ops;
+
+ return cs_dsp_halo_init(&cs40l50->dsp);
+}
+
+int cs40l50_probe(struct cs40l50_private *cs40l50)
+{
+ int error, i, irq;
+ u32 val;
+
+ mutex_init(&cs40l50->lock);
+
+ error = devm_regulator_bulk_get(cs40l50->dev, ARRAY_SIZE(cs40l50_supplies),
+ cs40l50_supplies);
+ if (error)
+ return dev_err_probe(cs40l50->dev, error, "Failed to request supplies\n");
+
+ error = regulator_bulk_enable(ARRAY_SIZE(cs40l50_supplies), cs40l50_supplies);
+ if (error)
+ return dev_err_probe(cs40l50->dev, error, "Failed to enable supplies\n");
+
+ cs40l50->reset_gpio = devm_gpiod_get_optional(cs40l50->dev, "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(cs40l50->reset_gpio)) {
+ error = PTR_ERR(cs40l50->reset_gpio);
+ goto err;
+ }
+
+ usleep_range(CS40L50_MIN_RESET_PULSE_WIDTH_US, CS40L50_MIN_RESET_PULSE_WIDTH_US + 100);
+
+ gpiod_set_value_cansleep(cs40l50->reset_gpio, 0);
+
+ usleep_range(CS40L50_CP_READY_DELAY_US, CS40L50_CP_READY_DELAY_US + 1000);
+
+ for (i = 0; i < CS40L50_DSP_TIMEOUT_COUNT; i++) {
+ error = cs40l50_dsp_read(cs40l50, CS40L50_DSP1_HALO_STATE, &val);
+ if (!error && val < 0xFFFF && val >= CS40L50_HALO_STATE_BOOT_DONE)
+ break;
+
+ usleep_range(CS40L50_DSP_POLL_US, CS40L50_DSP_POLL_US + 100);
+ }
+
+ if (i == CS40L50_DSP_TIMEOUT_COUNT) {
+ dev_err(cs40l50->dev, "Firmware boot failed: %d, halo state = %#x\n", error, val);
+ goto err;
+ }
+
+ cs40l50->vibe_workqueue = alloc_ordered_workqueue("cs40l50_workqueue", WQ_HIGHPRI);
+ if (!cs40l50->vibe_workqueue) {
+ error = -ENOMEM;
+ goto err;
+ }
+
+ INIT_WORK(&cs40l50->vibe_start_work, cs40l50_vibe_start_worker);
+ INIT_WORK(&cs40l50->vibe_stop_work, cs40l50_vibe_stop_worker);
+
+ error = cs40l50_cs_dsp_init(cs40l50);
+ if (error)
+ goto err;
+
+ error = cs40l50_input_init(cs40l50);
+ if (error)
+ goto err;
+
+ error = cs40l50_patch_firmware(cs40l50);
+ if (error)
+ goto err;
+
+ error = cs40l50_pseq_init(cs40l50);
+ if (error)
+ goto err;
+
+ error = cs40l50_config_bst(cs40l50);
+ if (error)
+ goto err;
+
+ error = devm_regmap_add_irq_chip(cs40l50->dev, cs40l50->regmap, cs40l50->irq,
+ IRQF_ONESHOT | IRQF_SHARED | IRQF_TRIGGER_LOW, 0, &cs40l50_regmap_irq_chip,
+ &cs40l50->irq_data);
+ if (error) {
+ dev_err(cs40l50->dev, "Failed to register IRQ chip: %d\n", error);
+ goto err;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(cs40l50_irqs); i++) {
+ irq = regmap_irq_get_virq(cs40l50->irq_data, cs40l50_irqs[i].irq);
+ if (irq < 0) {
+ dev_err(cs40l50->dev, "Failed to get %s\n", cs40l50_irqs[i].name);
+ error = irq;
+ goto err;
+ }
+
+ error = devm_request_threaded_irq(cs40l50->dev, irq, NULL, cs40l50_irqs[i].handler,
+ IRQF_ONESHOT | IRQF_SHARED | IRQF_TRIGGER_LOW,
+ cs40l50_irqs[i].name, cs40l50);
+ if (error) {
+ dev_err(cs40l50->dev, "Failed to request IRQ %s: %d\n",
+ cs40l50_irqs[i].name, error);
+ goto err;
+ }
+ }
+
+ return 0;
+
+err:
+ cs40l50_remove(cs40l50);
+
+ return error;
+}
+EXPORT_SYMBOL_GPL(cs40l50_probe);
+
+int cs40l50_remove(struct cs40l50_private *cs40l50)
+{
+ disable_irq(cs40l50->irq);
+
+ if (cs40l50->dsp.booted)
+ cs_dsp_power_down(&cs40l50->dsp);
+ if (&cs40l50->dsp)
+ cs_dsp_remove(&cs40l50->dsp);
+
+ if (cs40l50->vibe_workqueue) {
+ flush_workqueue(cs40l50->vibe_workqueue);
+ destroy_workqueue(cs40l50->vibe_workqueue);
+ }
+
+ gpiod_set_value_cansleep(cs40l50->reset_gpio, 1);
+ regulator_bulk_disable(ARRAY_SIZE(cs40l50_supplies), cs40l50_supplies);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(cs40l50_remove);
+
+MODULE_DESCRIPTION("CS40L50 Advanced Haptic Driver");
+MODULE_AUTHOR("James Ogletree, Cirrus Logic Inc. <james.ogletree@xxxxxxxxxx>");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/input/cs40l50.h b/include/linux/input/cs40l50.h
new file mode 100644
index 000000000000..f2c8a101fa00
--- /dev/null
+++ b/include/linux/input/cs40l50.h
@@ -0,0 +1,321 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * CS40L50 Advanced Haptic Driver with Waveform Memory DSP
+ * and Closed-Loop Algorithms
+ *
+ * Copyright 2023 Cirrus Logic, Inc.
+ *
+ */
+#ifndef __CS40L50_H__
+#define __CS40L50_H__
+
+#include <linux/bitops.h>
+#include <linux/gpio/consumer.h>
+#include <linux/input.h>
+#include <linux/regmap.h>
+#include <linux/interrupt.h>
+#include <linux/firmware/cirrus/cs_dsp.h>
+#include <linux/firmware/cirrus/wmfw.h>
+
+/* Boost */
+#define CS40L50_TEST_KEY 0x40
+#define CS40L50_BLOCK_ENABLES 0x2018
+#define CS40L50_ERROR_RELEASE 0x2034
+#define CS40L50_PWRMGT_CTL 0x2900
+#define CS40L50_BST_LPMODE_SEL 0x3810
+#define CS40L50_STATUS 0x4200
+#define CS40L50_MON_ERROR_OVERIDE 0x4220
+#define CS40L50_TEST_CONFIG 0x4240
+#define CS40L50_MON_VALUE_CTRL 0x4404
+#define CS40L50_TEST_VIS_SPARE 0x5C00
+#define CS40L50_TEMP_WARN_CONFIG 0x6024
+#define CS40L50_KEY_SET_1 0x55
+#define CS40L50_KEY_SET_2 0xAA
+#define CS40L50_TEMP_SENSOR_3 0x400
+#define CS40L50_DCM_LOW_POWER 0x1
+#define CS40L50_MON_ENABLE 0x3201
+#define CS40L50_VBST_VDD_AMP 0x1000000
+#define CS40L50_TEMP_ERR_THLD 0x8000007D
+#define CS40L50_TEMP_WARN_THLD 0x8
+#define CS40L50_TEMP_FILT_DEBOUNCE_OFF 0x510002B5
+#define CS40L50_TEMP_WARN_ATK_VOL 0x522303
+
+/* Interrupts */
+#define CS40L50_IRQ1_INT_1 0xE010
+#define CS40L50_IRQ1_INT_2 0xE014
+#define CS40L50_IRQ1_INT_3 0xE018
+#define CS40L50_IRQ1_INT_4 0xE01C
+#define CS40L50_IRQ1_INT_8 0xE02C
+#define CS40L50_IRQ1_INT_9 0xE030
+#define CS40L50_IRQ1_INT_10 0xE034
+#define CS40L50_IRQ1_INT_18 0xE054
+#define CS40L50_IRQ1_INT_19 0xE058
+#define CS40L50_IRQ1_MASK_1 0xE090
+#define CS40L50_IRQ1_MASK_2 0xE094
+#define CS40L50_IRQ1_MASK_3 0xE098
+#define CS40L50_IRQ1_MASK_8 0xE0AC
+#define CS40L50_IRQ1_MASK_9 0xE0B0
+#define CS40L50_IRQ1_MASK_10 0xE0B4
+#define CS40L50_IRQ1_MASK_18 0xE0D4
+#define CS40L50_IRQ1_MASK_19 0xE0D8
+#define CS40L50_IRQ1_STS_1 0xE210
+#define CS40L50_IRQ1_STS_2 0xE214
+#define CS40L50_IRQ1_STS_3 0xE218
+#define CS40L50_IRQ1_STS_8 0xE22C
+#define CS40L50_IRQ1_STS_9 0xE230
+#define CS40L50_IRQ1_STS_10 0xE234
+#define CS40L50_IRQ1_STS_18 0xE254
+#define CS40L50_IRQ1_STS_19 0xE258
+#define CS40L50_AMP_SHORT_MASK BIT(31)
+#define CS40L50_VIRT2_MBOX_MASK BIT(21)
+#define CS40L50_TEMP_ERR_MASK BIT(31)
+#define CS40L50_BST_UVP_MASK BIT(6)
+#define CS40L50_BST_SHORT_MASK BIT(7)
+#define CS40L50_BST_ILIMIT_MASK BIT(8)
+#define CS40L50_UVLO_VDDBATT_MASK BIT(16)
+#define CS40L50_GLOBAL_ERROR_MASK BIT(15)
+#define CS40L50_ERROR_RELEASE_MASK BIT(11)
+#define CS40L50_BOOT_DONE_MASK BIT(1)
+#define CS40L50_IRQ(_irq, _name, _hand) \
+ { \
+ .irq = _irq, \
+ .name = _name, \
+ .handler = _hand, \
+ }
+#define CS40L50_REG_IRQ(_reg, _irq) \
+ [CS40L50_ ## _irq ## _IRQ] = { \
+ .reg_offset = (CS40L50_ ## _reg) - CS40L50_IRQ1_INT_1, \
+ .mask = CS40L50_ ## _irq ## _MASK \
+ }
+
+/* Mailbox Inbound Commands */
+#define CS40L50_RAM_BANK_INDEX_START 0x1000000
+#define CS40L50_RAM_BANK_INDEX_END 0x100007F
+#define CS40L50_OWT_INDEX_START 0x1400000
+#define CS40L50_OWT_INDEX_END 0x140007F
+#define CS40L50_ROM_BANK_INDEX_START 0x1800000
+#define CS40L50_ROM_BANK_INDEX_END 0x180001A
+#define CS40L50_OTP_BUZZ 0x1800080
+#define CS40L50_RAM_BUZZ_INDEX_START 0x1800081
+#define CS40L50_RAM_BUZZ_INDEX_END 0x1800085
+#define CS40L50_MBOX_CMD_HIBERNATE 0x2000001
+#define CS40L50_MBOX_CMD_WAKEUP 0x2000002
+#define CS40L50_MBOX_CMD_PREVENT_HIBERNATE 0x2000003
+#define CS40L50_MBOX_CMD_ALLOW_HIBERNATION 0x2000004
+#define CS40L50_MBOX_CMD_SHUTDOWN 0x2000005
+#define CS40L50_MBOX_CMD_DURATION_REPORT 0x3000001
+#define CS40L50_MBOX_CMD_START_I2S 0x3000002
+#define CS40L50_MBOX_CMD_STOP_I2S 0x3000003
+#define CS40L50_MBOX_CMD_HAPTICS_LOGGER_RESET 0x3000004
+#define CS40L50_MBOX_CMD_OWT_PUSH 0x3000008
+#define CS40L50_MBOX_CMD_OWT_RESET 0x3000009
+#define CS40L50_MBOX_CMD_DVL_REINIT 0x300000A
+#define CS40L50_MBOX_CMD_STOP_PLAYBACK 0x5000000
+#define CS40L50_MBOX_CMD_F0_EST 0x7000001
+#define CS40L50_MBOX_CMD_REDC_EST 0x7000002
+#define CS40L50_MBOX_CMD_LE_EST 0x7000004
+#define CS40L50_MBOX_CMD_OWT_DELETE 0xD000000
+
+/* Mailbox Outbound Commands */
+#define CS40L50_MBOX_QUEUE_BASE 0x11004
+#define CS40L50_MBOX_QUEUE_END 0x1101C
+#define CS40L50_DSP_VIRTUAL1_MBOX_1 0x11020
+#define CS40L50_DSP1_MBOX_QUEUE_WT 0x28042C8
+#define CS40L50_DSP1_MBOX_QUEUE_RD 0x28042CC
+#define CS40L50_DSP_MBOX_HAPTIC_COMPLETE_MBOX 0x1000000
+#define CS40L50_DSP_MBOX_HAPTIC_COMPLETE_GPIO 0x1000001
+#define CS40L50_DSP_MBOX_HAPTIC_COMPLETE_I2S 0x1000002
+#define CS40L50_DSP_MBOX_HAPTIC_TRIGGER_MBOX 0x1000010
+#define CS40L50_DSP_MBOX_HAPTIC_TRIGGER_GPIO 0x1000011
+#define CS40L50_DSP_MBOX_HAPTIC_TRIGGER_I2S 0x1000012
+#define CS40L50_DSP_MBOX_INIT 0x2000000
+#define CS40L50_DSP_MBOX_AWAKE 0x2000002
+#define CS40L50_DSP_MBOX_F0_EST_START 0x7000011
+#define CS40L50_DSP_MBOX_F0_EST_DONE 0x7000021
+#define CS40L50_DSP_MBOX_REDC_EST_START 0x7000012
+#define CS40L50_DSP_MBOX_REDC_EST_DONE 0x7000022
+#define CS40L50_DSP_MBOX_LE_EST_START 0x7000014
+#define CS40L50_DSP_MBOX_LE_EST_DONE 0x7000024
+#define CS40L50_DSP_MBOX_ACK 0xA000000
+#define CS40L50_DSP_MBOX_PANIC 0xC000000
+#define CS40L50_DSP_MBOX_WATERMARK 0xD000000
+#define CS40L50_DSP_MBOX_ERR_EVENT_UNMAPPED 0xC0004B3
+#define CS40L50_DSP_MBOX_ERR_EVENT_MODIFY 0xC0004B4
+#define CS40L50_DSP_MBOX_ERR_NULLPTR 0xC0006A5
+#define CS40L50_DSP_MBOX_ERR_BRAKING 0xC0006A8
+#define CS40L50_DSP_MBOX_ERR_INVAL_SRC 0xC0006AC
+#define CS40L50_DSP_MBOX_ERR_ENABLE_RANGE 0xC000836
+#define CS40L50_DSP_MBOX_ERR_GPIO_UNMAPPED 0xC000837
+#define CS40L50_DSP_MBOX_ERR_ISR_RANGE 0xC000838
+#define CS40L50_DSP_MBOX_PERMANENT_SHORT 0xC000C1C
+#define CS40L50_DSP_MBOX_RUNTIME_SHORT 0xC000C1D
+
+/* DSP */
+#define CS40L50_DSP1_XMEM_PACKED_0 0x2000000
+#define CS40L50_DSP1_XMEM_UNPACKED32_0 0x2400000
+#define CS40L50_DSP1_SYS_INFO_ID 0x25E0000
+#define CS40L50_DSP1_XMEM_UNPACKED24_0 0x2800000
+#define CS40L50_NUM_OF_WAVES 0x280CB4C
+#define CS40L50_DSP1_CORE_BASE 0x2B80000
+#define CS40L50_DSP1_SCRATCH1 0x2B805C0
+#define CS40L50_DSP1_SCRATCH2 0x2B805C8
+#define CS40L50_DSP1_SCRATCH3 0x2B805D0
+#define CS40L50_DSP1_SCRATCH4 0x2B805D8
+#define CS40L50_CCM_CORE_CONTROL 0x2BC1000
+#define CS40L50_RAM_INIT 0x28021DC
+#define CS40L50_DSP1_YMEM_PACKED_0 0x2C00000
+#define CS40L50_DSP1_YMEM_UNPACKED32_0 0x3000000
+#define CS40L50_DSP1_YMEM_UNPACKED24_0 0x3400000
+#define CS40L50_DSP1_PMEM_0 0x3800000
+#define CS40L50_DSP1_PMEM_5114 0x3804FE8
+#define CS40L50_DSP1_MEM_RDY_HW 0x2
+#define CS40L50_DSP1_RAM_INIT_FLAG 0x1
+#define CS40L50_DSP1_CLOCK_DISABLE 0x80
+#define CS40L50_DSP1_CLOCK_ENABLE 0x281
+#define CS40L50_DSP_POLL_US 1000
+#define CS40L50_DSP_TIMEOUT_COUNT 100
+#define CS40L50_MBOX_POLL_US 5000
+
+/* Calibration */
+#define CS40L50_DSP1_REDC_ESTIMATION 0x2802F7C
+#define CS40L50_DSP1_F0_ESTIMATION 0x2802F84
+#define CS40L50_DSP1_DYNAMIC_F0_ENABLE 0x2802F8C
+#define CS40L50_DSP1_DYNAMIC_F0_THRESHOLD 0x2802F90
+#define CS40L50_DSP1_F0_STORED 0x2805C00
+#define CS40L50_DSP1_REDC_STORED 0x2805C04
+#define CS40L50_DSP1_RE_EST_STATUS 0x3401B40
+#define CS40L50_REDC_EST_DELAY_US 30000
+#define CS40L50_F0_EST_DELAY_US 10000
+
+/* OWT */
+#define CS40L50_DSP1_OWT_SIZE 0x2805C38
+#define CS40L50_DSP1_OWT_NEXT 0x2805C3C
+#define CS40L50_NUM_OF_OWT_WAVES 0x2805C40
+#define CS40L50_DSP1_OWT_BASE 0x2805C34
+#define CS40L50_MAX_PWLE_SECTIONS 126
+#define CS40L50_CUSTOM_DATA_SIZE 2
+#define CS40L50_WT_HEADER_PWLE_SIZE 12
+#define CS40L50_WT_HEADER_DEFAULT_FLAGS 0x0000
+#define CS40L50_WT_HEADER_OFFSET 3
+#define CS40L50_WT_TYPE_PCM 8
+#define CS40L50_WT_TYPE_PWLE 12
+#define CS40L50_PCM_ID 0x0000
+
+/* GPIO */
+#define CS40L50_DSP1_GPIO_BASE 0x2804140
+#define CS40L50_GPIO_MAPPING_INVALID 0
+#define CS40L50_GPI_DISABLE 0x1FF
+#define CS40L50_BTN_NUM_MASK GENMASK(14, 12)
+#define CS40L50_BTN_EDGE_MASK BIT(15)
+
+/* State */
+#define CS40L50_DSP1_HALO_STATE 0x28021E0
+#define CS40L50_HALO_STATE_BOOT_DONE 2
+#define CS40L50_MIN_RESET_PULSE_WIDTH_US 1100
+#define CS40L50_CP_READY_DELAY_US 2200
+
+/* Device */
+#define CS40L50_DEVID 0x0
+#define CS40L50_REVID 0x4
+#define CS40L50_DEVID_A 0x40A50
+#define CS40L50_REVID_B0 0xB0
+
+/* Write sequencer */
+#define CS40L50_DSP1_POWER_ON_SEQ 0x280C320
+#define CS40L50_PSEQ_MAX_WORDS 200
+#define CS40L50_PSEQ_OP_MASK GENMASK(23, 16)
+#define CS40L50_PSEQ_OP_SHIFT 16
+#define CS40L50_PSEQ_OP_WRITE_ADDR8 0x02
+#define CS40L50_PSEQ_OP_WRITE_L16 0x04
+#define CS40L50_PSEQ_OP_WRITE_H16 0x05
+#define CS40L50_PSEQ_OP_WRITE_FULL 0x00
+#define CS40L50_PSEQ_OP_WRITE_FULL_WORDS 3
+#define CS40L50_PSEQ_OP_WRITE_X16_WORDS 2
+#define CS40L50_PSEQ_OP_END 0xFF
+#define CS40L50_PSEQ_OP_END_WORDS 1
+#define CS40L50_PSEQ_WRITE_FULL_LOWER_ADDR_SHIFT 8
+#define CS40L50_PSEQ_WRITE_FULL_UPPER_ADDR_SHIFT 16
+#define CS40L50_PSEQ_WRITE_FULL_LOWER_ADDR_MASK GENMASK(15, 0)
+#define CS40L50_PSEQ_WRITE_FULL_UPPER_DATA_SHIFT 24
+#define CS40L50_PSEQ_WRITE_FULL_LOWER_DATA_MASK GENMASK(23, 0)
+
+enum cs40l50_wvfrm_bank {
+ CS40L50_WVFRM_BANK_RAM,
+ CS40L50_WVFRM_BANK_ROM,
+ CS40L50_WVFRM_BANK_OWT,
+ CS40L50_WVFRM_BANK_BUZ,
+ CS40L50_WVFRM_BANK_NUM,
+};
+
+enum cs40l50_irq_list {
+ CS40L50_GLOBAL_ERROR_IRQ,
+ CS40L50_UVLO_VDDBATT_IRQ,
+ CS40L50_BST_ILIMIT_IRQ,
+ CS40L50_BST_SHORT_IRQ,
+ CS40L50_BST_UVP_IRQ,
+ CS40L50_TEMP_ERR_IRQ,
+ CS40L50_VIRT2_MBOX_IRQ,
+ CS40L50_AMP_SHORT_IRQ,
+ CS40L50_NUM_IRQ
+};
+
+union cs40l50_buzzgen {
+ u32 words[3];
+ struct {
+ u32 freq;
+ u32 level;
+ u32 duration;
+ } params;
+};
+
+struct cs40l50_owt_header {
+ u32 wvfrm_type;
+ u32 offset;
+ u32 data_size;
+};
+
+struct cs40l50_irq {
+ int irq;
+ const char *name;
+ irqreturn_t (*handler)(int irq, void *data);
+};
+
+struct cs40l50_effect {
+ int id;
+ u32 trigger_index;
+ enum cs40l50_wvfrm_bank wvfrm_bank;
+ u32 mapping;
+ struct list_head list;
+};
+
+struct cs40l50_pseq_op {
+ u16 offset;
+ u8 operation;
+ u32 words[3];
+ u32 size;
+ struct list_head list;
+};
+
+struct cs40l50_private {
+ struct device *dev;
+ struct regmap *regmap;
+ struct cs_dsp dsp;
+ struct mutex lock;
+ struct gpio_desc *reset_gpio;
+ struct input_dev *input;
+ struct list_head effect_head;
+ struct ff_effect *trigger_effect;
+ struct workqueue_struct *vibe_workqueue;
+ struct work_struct vibe_start_work;
+ struct work_struct vibe_stop_work;
+ struct regmap_irq_chip_data *irq_data;
+ struct list_head pseq_op_head;
+ int irq;
+};
+
+int cs40l50_probe(struct cs40l50_private *cs40l50);
+int cs40l50_remove(struct cs40l50_private *cs40l50);
+
+extern const struct regmap_config cs40l50_regmap;
+
+#endif /* __CS40L50_H__ */
--
2.25.1
